There is a heated debate about how much of the box office hit The Conjuring is a true story.

It is true that one of the breakout stars of the movie, Annabelle the possessed doll, does exist. The real Annabelle, though, is a run-of-the-mill Raggedy Ann doll. She's not the spooky creature depicted in the movie.

Annabelle is part of a Connecticut museum run by Lorraine Warren, whose story is told in The Conjuring (she is played by Vera Farmiga). Both Lorraine Warren and her late husband Ed helped the Perron family, whose Rhode Island farm house was allegedly taken over by spirits.

Even if tall tales are being told, it makes for a scary movie (now out on DVD/Blu-Ray).

In the Blu-Ray and DVD extras, Conjuring screenwriters Chad and Carey Hayes explain why you don't just destroy a possessed doll like Annabelle. The doll is just a vehicle. Better to keep the doll under lock and key.

And Tony Spera, psychic investigator, bravely opens the case where the possessed Raggedy Ann doll resides. He points out that he will not touch Annabelle.

"Because as you know," says Spera. "It's very dangerous to touch an object like this."